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Strengthening method of laser-induced metal surface layer composite TiCN

A laser-induced, metal surface technology, applied in metal material coating process, coating, solid-state chemical plating, etc., can solve the problems of easy peeling of the coating and low strength of the joint surface, and achieve good hardness and wear resistance , strengthen the effect of improving

Active Publication Date: 2013-04-17
海安华诚新材料有限公司
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AI Technical Summary

Problems solved by technology

[0004] Regardless of the CVD or PVD method, the TiCN coating obtained is relatively thin, with a thickness of only a few microns (μm), and the coating is mechanically bonded to the substrate, the strength of the bonding surface is low, and the coating is prone to peeling off during use.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] 1. Surface treatment of Q235A, 20 steel, 40 steel, 45 steel, 20G, 20Mn, 40Mn and 60Mn carbon structural steel:

[0017] 1. Apply industrial pure TiO on the surface of carbon structural steel 2 And tetramethyl urea, carbon black mixture, its mass ratio is 6:5:3, and thickness is 1.5 millimeters;

[0018] 2. As the laser spot moves, the mixed gas of acetylene and nitrogen is passed through, and the flow rates of acetylene and nitrogen are 5L / min and 7L / min respectively;

[0019] 3. The laser beam scans at a speed of 500mm / min, the laser power is 900W, the laser wavelength is 1.06μm, and the spot diameter is 2mm.

[0020] 4. After testing, the surface layer of the treated carbon structural steel is compounded with TiCN up to 500 microns, and the microhardness can reach above HV2600.

[0021] 2. Surface treatment of 20MnV, 40Cr, 35CrMoV and 20CrMnSi alloy structural steel respectively:

[0022] 1. Coating industrial pure TiO on the surface of alloy structural steel ...

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Abstract

The invention relates to the technical field of metal surface strengthening and discloses a strengthening method of laser-induced metal surface layer composite TiCN, which comprises the components of TiO2, tetramethyl urea, carbon black, acetylene and nitrogen. The method comprises the steps that the metal surface is coated with a mixture of TiO2, tetramethyl urea and carbon black, and under the condition that acetylene and nitrogen coexist, laser beams are used for scanning the metal surface coated with the mixture. With the adoption of the method, TiCN can be generated on the metal surface layer in an in-situ composite manner, so that the strengthening of the metal surface is realized, and the wear-resisting performance is improved.

Description

technical field [0001] The invention relates to the technical field of metal surface strengthening. Background technique [0002] Titanium carbide nitride (TiCN) is a non-oxide material with excellent performance and wide application. It is also a coating material with excellent performance. It is an infinite solid solution of titanium carbide and titanium nitride, and has both titanium carbide and titanium nitride. It has the advantages of high hardness, wear resistance, corrosion resistance, oxidation resistance, etc., and has good thermal conductivity, electrical conductivity and chemical stability. It is widely used in cutting tools, powder metallurgy and cermet products. It is the current research and One of the most widely used thin film materials. [0003] The preparation techniques of TiCN coating are mainly chemical vapor deposition (CVD) and physical vapor deposition (PVD). The deposition temperature of the CVD method is high, exceeding the heat treatment tempera...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C24/08C23C20/08
Inventor 王辉左健民童涵肖圣亮张荣荣
Owner 海安华诚新材料有限公司
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